EP0976928A3 - Schaufelanordnung für eine Strömungsmaschine - Google Patents

Schaufelanordnung für eine Strömungsmaschine Download PDF

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Publication number
EP0976928A3
EP0976928A3 EP99114975A EP99114975A EP0976928A3 EP 0976928 A3 EP0976928 A3 EP 0976928A3 EP 99114975 A EP99114975 A EP 99114975A EP 99114975 A EP99114975 A EP 99114975A EP 0976928 A3 EP0976928 A3 EP 0976928A3
Authority
EP
European Patent Office
Prior art keywords
flow
blade
wall
corner
turbomachine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99114975A
Other languages
English (en)
French (fr)
Other versions
EP0976928A2 (de
EP0976928B1 (de
Inventor
Dietrich Dr.-Ing. Bechert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Publication of EP0976928A2 publication Critical patent/EP0976928A2/de
Publication of EP0976928A3 publication Critical patent/EP0976928A3/de
Application granted granted Critical
Publication of EP0976928B1 publication Critical patent/EP0976928B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/324—Blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • F01D5/145—Means for influencing boundary layers or secondary circulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/181—Axial flow rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • F04D29/544—Blade shapes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Die Erfindung betrifft eine Schaufel für eine Strömungsmaschine, beispielsweise einen Verdichter, eine Pumpe oder eine Turbine, wobei sich die Schaufel von mindestens einer Wand in eine Strömung erstreckt und sich im Betrieb der Strömungsmaschine im Übergangsbereich zwischen Wand und Schaufel eine Eckenströmung ausbildet. Derartige Schaufeln finden sich in vielerlei Bauarten von Strömungsmaschinen, beispielsweise Axialströmungsmaschinen wie Verdichtern und Turbinen, aber auch Radialströmungsmaschinen wie Radialventilatoren. Die Wirkungsgrade derartiger Maschinen liegen zwar meist zwischen 80% und 90%, sind jedoch noch immer geringer als die theoretisch erreichbaren Wirkungsgrade. Höhere Wirkungsgrade werden auf baulich einfache Weise erfindungsgemäß dadurch erreicht, daß die Oberfläche der Schaufel (1) oder der Wand (2) mit zumindest einem gegenüber der Schaufel (1) kleinem Hilfsflügel (4) versehen ist, der sich von der Oberfläche der Schaufel (1) oder der Wand (2) weg in die Strömung erstreckt und der gegen die an dieser Stelle herrschende Strömung angestellt ist, wobei der Hilfsflügel (4) derart im Bereich der Eckenströmung (6) auf der Schaufel (1) oder der Wand (4) angeordnet ist, daß im Betrieb der Strömungsmaschine in seinem Nachlauf ein Wirbel (5) ausgebildet ist, durch den die Eckenströmung (6) beeinflußt und deren Ablösung weitestgehend vermieden wird. Da die Eckenströmung aufgrund der Nähe zur Schaufeloberfläche und zur Wand besonders langsam ist, löst sie sehr leicht ab, was für Verluste in den Strömungsmaschinen verantwortlich ist. Der durch den Hilfsflügel erzeugte Wirbel führt schnell strömendes Fluid aus der Außenströmung in die Eckenströmung und verhindert so die Ablösung. Dadurch kann der Wirkungsgrad von Strömungsmaschinen nochmals gesteigert werden. Die bei herkömmlichen Strömungsmaschinen durch die Eckenablösung erzeugten Vibrationen und Geräusche werden ebenfalls vermindert.
EP99114975A 1998-07-31 1999-07-30 Schaufelanordnung für eine Strömungsmaschine Expired - Lifetime EP0976928B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19834647 1998-07-31
DE19834647A DE19834647C2 (de) 1998-07-31 1998-07-31 Schaufelanordnung für eine Strömungsmaschine

Publications (3)

Publication Number Publication Date
EP0976928A2 EP0976928A2 (de) 2000-02-02
EP0976928A3 true EP0976928A3 (de) 2001-09-19
EP0976928B1 EP0976928B1 (de) 2004-08-25

Family

ID=7876042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114975A Expired - Lifetime EP0976928B1 (de) 1998-07-31 1999-07-30 Schaufelanordnung für eine Strömungsmaschine

Country Status (2)

Country Link
EP (1) EP0976928B1 (de)
DE (2) DE19834647C2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1857635A1 (de) * 2006-05-18 2007-11-21 Siemens Aktiengesellschaft Turbinenschaufel für eine Gasturbine
DE102008019740A1 (de) * 2008-04-19 2009-10-22 Mtu Aero Engines Gmbh Stator- und/oder Rotor-Stufe eines Axialverdichters einer Strömungsmaschine mit Strömungsleitelementen zur Wirkungsgradsteigerung
DE102008060424A1 (de) 2008-12-04 2010-06-10 Rolls-Royce Deutschland Ltd & Co Kg Strömungsmaschine mit Seitenwand-Grenzschicht-Barriere
FR2939852B1 (fr) * 2008-12-15 2014-10-31 Snecma Etage d'aubes statoriques dans un compresseur
DE102009052142B3 (de) * 2009-11-06 2011-07-14 MTU Aero Engines GmbH, 80995 Axialverdichter
FR2987875B1 (fr) 2012-03-09 2015-08-21 Snecma Generateurs de vortex places dans le canal inter-aubes d'un redresseur de compresseur.
DE102012108975A1 (de) * 2012-09-24 2014-03-27 Firma IHI Charging Systems International GmbH Verstellbarer Leitapparat für einen Abgasturbolader und Abgasturbolader
US9359900B2 (en) * 2012-10-05 2016-06-07 General Electric Company Exhaust diffuser
ES2745632T3 (es) 2012-12-19 2020-03-03 MTU Aero Engines AG Etapa del estator y/o del rotor de una turbomáquina, así como turbina de gas correspondiente
DE102013224050B3 (de) * 2013-08-23 2014-11-27 Deutsches Zentrum für Luft- und Raumfahrt e.V. Axialverdichter
BE1026579B1 (fr) * 2018-08-31 2020-03-30 Safran Aero Boosters Sa Aube a protuberance pour compresseur de turbomachine
IT202100002240A1 (it) * 2021-02-02 2022-08-02 Gen Electric Motore a turbine con palette a flusso trasversale ridotto
CN113548175B (zh) * 2021-07-19 2022-12-02 中国人民解放军国防科技大学 一种流向拐角边界层角涡的控制装置和方法
CN113562166B (zh) * 2021-07-19 2023-03-28 中国人民解放军国防科技大学 一种流向拐角结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920864A (en) * 1956-05-14 1960-01-12 United Aircraft Corp Secondary flow reducer
US3193185A (en) * 1962-10-29 1965-07-06 Gen Electric Compressor blading
US4023350A (en) * 1975-11-10 1977-05-17 United Technologies Corporation Exhaust case for a turbine machine
DE3908285C1 (en) * 1989-03-14 1990-06-07 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De Turbine wheel of an exhaust turbocharger for an internal combustion engine with radial and/or mixed-flow gas feed
JPH094402A (ja) * 1995-06-20 1997-01-07 Mitsubishi Heavy Ind Ltd 軸流タービンの翼列

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039736A (en) * 1954-08-30 1962-06-19 Pon Lemuel Secondary flow control in fluid deflecting passages

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920864A (en) * 1956-05-14 1960-01-12 United Aircraft Corp Secondary flow reducer
US3193185A (en) * 1962-10-29 1965-07-06 Gen Electric Compressor blading
US4023350A (en) * 1975-11-10 1977-05-17 United Technologies Corporation Exhaust case for a turbine machine
DE3908285C1 (en) * 1989-03-14 1990-06-07 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De Turbine wheel of an exhaust turbocharger for an internal combustion engine with radial and/or mixed-flow gas feed
JPH094402A (ja) * 1995-06-20 1997-01-07 Mitsubishi Heavy Ind Ltd 軸流タービンの翼列

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05 30 May 1997 (1997-05-30) *

Also Published As

Publication number Publication date
DE59910328D1 (de) 2004-09-30
EP0976928A2 (de) 2000-02-02
DE19834647A1 (de) 2000-02-03
DE19834647C2 (de) 2000-06-29
EP0976928B1 (de) 2004-08-25

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